Pydot ending up with symbol lookup error

[Kurian]

Hi Guys,

I am facing a issue with pydot. When every I am trying to generate a
image with pydot I am getting this error.

File "/usr/lib/pymodules/python2.6/pydot.py", line 1602, in <lambda>
lambda path, f=frmt, prog=self.prog : self.write(path, format=f,
prog=prog))
File "/usr/lib/pymodules/python2.6/pydot.py", line 1696, in write
dot_fd.write(self.create(prog, format))
File "/usr/lib/pymodules/python2.6/pydot.py", line 1796, in create
status, stderr_output) )
pydot.InvocationException: Program terminated with status: 127. stderr
follows: /usr/local/bin/dot: symbol lookup error: /usr/local/bin/dot:
undefined symbol: gvContextPlugins

my os is ubuntu 10.04 and pydot version 1.0.2, do you have any idea
what's going wrong with this and how I can fix this ?

Thanks

Kurian